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https://issues.apache.org/jira/browse/HIVE-11171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prasanth Jayachandran updated HIVE-11171:
-----------------------------------------
Attachment: HIVE-11171.branch-1.patch
Some spark qtest changes I was able to regenerate on branch-1 (it matches with
the origin master patch). Rest of the tests I was not able to repro. Possibly
from different jira.
> Join reordering algorithm might introduce projects between joins
> ----------------------------------------------------------------
>
> Key: HIVE-11171
> URL: https://issues.apache.org/jira/browse/HIVE-11171
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Fix For: 1.3.0, 2.0.0, 1.2.2
>
> Attachments: HIVE-11171.01.patch, HIVE-11171.02.patch,
> HIVE-11171.03.patch, HIVE-11171.5.patch, HIVE-11171.branch-1.patch,
> HIVE-11171.branch-1.patch, HIVE-11171.patch, HIVE-11171.patch
>
>
> Join reordering algorithm might introduce projects between joins which causes
> multijoin optimization in SemanticAnalyzer to not kick in.
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